Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Reletter

Give AI agents and LLMs access to newsletter data from Reletter.

Compatibility: Not stated.

Grade B

Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

Rescanned at commit 2ff99d022296, unchanged since the check below.

NETWORK_NO_FIXED_HOST SECRETS_ENV_READ OBFUSCATION_FILE_OVER_READ_CAP

Why this grade

  • NETWORK_NO_FIXED_HOST Low

    Makes a network call whose host is not written as a fixed address.

    src/api-key-handler.ts, line 109 const quotaResp = await fetch(

  • SECRETS_ENV_READ Note

    Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.

    src/stdio.ts, line 16 const API_KEY = process.env.RELETTER_API_KEY ?? "";

  • OBFUSCATION_FILE_OVER_READ_CAP Note

    A file was over the read cap and was not fully read.

    worker-configuration.d.ts, line 1 /* eslint-disable */

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Pass

    No shell or command execution found, and no extra permission was declared.

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    src/api-key-handler.ts, line 109

    const quotaResp = await fetch(

    src/index.ts, line 26

    const resp = await fetch(url.toString(), {

    src/index.ts, line 57

    fetch(request: Request, env: Env, ctx: ExecutionContext) {

    Show more

    src/index.ts, line 61

    return provider.fetch(rewritten, env, ctx);

    src/index.ts, line 63

    return provider.fetch(request, env, ctx);

    src/stdio.ts, line 28

    const resp = await fetch(url.toString(), {

    worker-configuration.d.ts, line 305

    fetch(input: RequestInfo | URL, init?: RequestInit<RequestInitCfProperties>): Promise<Response>;

    worker-configuration.d.ts, line 401

    declare function fetch(input: RequestInfo | URL, init?: RequestInit<RequestInitCfProperties>): Promise<Response>;

  • Secrets

    Note

    reads an environment variable.

    SECRETS_ENV_READ

    src/stdio.ts, line 16

    const API_KEY = process.env.RELETTER_API_KEY ?? "";

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Note

    a file was over the read cap and was not fully read.

    OBFUSCATION_FILE_OVER_READ_CAP

    worker-configuration.d.ts, line 1

    /* eslint-disable */

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Note

Hygiene check of commit 2ff99d022296. can reach a host that is not written as a fixed address. reads an environment variable. a file was over the read cap and was not fully read.

Date and source

Date checked:

View source

github.com

Commit graded: 2ff99d022296e723a127c4ad292578fb0716a952

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen